Help on UG Polerouter sub

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So, this one seems a bit fishy, but I'd be happy to be corrected if someone can find a reference dial. Looks like early model dial (204615/1) on a late model case. Never seen that sweep before either. Opinions?



NB: Correction, I did find the sweep second (in steel, not red) on a 869116/02 model:

869116_01_large.jpg
Edited: